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A flexible metal-organic framework with double interpenetration for highly selective CO_2 capture at room temperature

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Science China Chemistry 2016年第8期59卷 1051-1058页

作者： Bingcong Zhou haowen Yang Yan Deng Ming liu Bin liu Nongyue He Zhiyang Li State Key Laboratory of Bioelectronics School of Biological Science and Medical Engineering Southeast University Laboratory of Neuro-Oncology Tianjin Neurological Institute Tianjin Medical University General Hospital Institute for Chemical and Bioengineering Department of Chemistry and Applied Biosciences ETH Zürich Economical Forest Cultivation and Utilization of 2011 Collaborative Innovation Center in Hunan Province Hunan Key Laboratory of Green Packaging and Application of Biological Nanotechnology Hunan University of Technology Department of Biomedical Engineering School of Basic Medical Sciences Nanjing Medical University Department of Laboratory Medicine Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University

MicroRNAs （miRNAs） are small non-coding RNAs that regulate gene expression at the post-transcriptional level, and their aberrant expression occurs during the development of malignant diseases. Recently, miRNAs have been proposed as potential prognostic and predictive biomarkers for early diagnosis. However, a major obstacle in rapid miRNA analysis from real samples is the lack of ultrasensitive and quantitative techniques. In this regard, the use of chemiluminescence （CL） system offers a highly sensitive strategy for detecting miRNAs. In this article, an ultrasensitive approach has been established for the quantification ofmiRNAs, using magnetic beads （MBs） and alkaline phosphatase （AP）-based CL system. This technique depends on sandwich hybridization among MBs-labeled capture probes, target miRNAs and biotin-labeled reporter probes, conjugation of streptavidin-alkaline phosphatase （SA-AP） to biotin-labeled reporter probes, and CL detection of AP-linked targets. Detection of miR-21 with this technique demonstrated a high selectivity and an ultralow limit of detection （LOD） of 60 fM with an extraordinarily wide range of six orders of magnitudes. The quantitation could be achieved by direct detecting target miRNA in serum samples within a total time of 1.5 h and did not require reverse transcription and polymerase chain reaction （PCR） amplification. Therefore, this developed method shows great potential for early cancer diagnosis based on miRNAs as biomarkers.

关键词： MicroRNA quantitation magnetic bead chemiluminescence liver cancer

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不同市售牛油理化性质与风味品质的比较

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中国油脂 2025年第2期50卷 46-50页

作者：王浩文张峰轶王传明刘琨王奇周兴江四川天味食品集团股份有限公司成都610000

为探究不同市售牛油的风味品质,采集来自7个产地的市售牛油,对牛油样品的水分及挥发物含量、酸值、过氧化值、熔点及脂肪酸组成进行检测,并进行感官评价和电子鼻测定。结果表明:7种市售牛油的水分及挥发物含量为0.01%~0.22%,酸值(KOH)为... 详细信息

为探究不同市售牛油的风味品质,采集来自7个产地的市售牛油,对牛油样品的水分及挥发物含量、酸值、过氧化值、熔点及脂肪酸组成进行检测,并进行感官评价和电子鼻测定。结果表明:7种市售牛油的水分及挥发物含量为0.01%~0.22%,酸值(KOH)为0.68~1.07mg/g,过氧化值为0.020~0.085g/100g(酸值和过氧化值均符合国标要求),熔点为44.5~46.5℃;7个市售牛油的脂肪酸主要由油酸、棕榈酸和硬脂酸组成,饱和脂肪酸含量为54.98%~58.82%,不饱和脂肪酸含量为41.18%~4502%;脂香味、膻味和焦香味是7个市售牛油的主体香气特征;电子鼻分析表明7个市售牛油的气味组分主要有氮氧化合物、芳香成分、甲基类、硫化物等;样品1的过氧化值、酸值、反式油酸、亚油酸含量均高于其他市售牛油,因此其脂香味、肉香味和奶香味的香气强度较高;样品4的酸值较低,可能由于其精炼程度较高,因此整体香气强度较弱;其他5种市售牛油的风味相似度较高。综上,市售牛油理化性质较好,不同样品间风味有一定差距。

关键词：牛油风味品质电子鼻

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Exploiting the point spread function for optical imaging through a scattering medium based on deconvolution method

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Journal of Innovative Optical Health Sciences 2019年第4期12卷 21-31页

作者： Hexiang He Xiangsheng Xie Yikun liu haowen Liang Jianying Zhou School of Physics and Optoelectronic Engineering Foshan University Foshan 528000 P.R.China Department of Physics College of Science Shantou University Shantou 515063P.R.China School of Physics Sun Yat-sen University Guangzhou 510275 P.R.China

Visual perception of humans penetrating turbid medium is hampered by *** techniques have been prompted recently to recover optical imaging through turbid *** them,speckle correlation based on deconvolution is one of the most attractive methods taking advantage of high imaging quality,robustness,eas-of-use,and *** exploiting the point spread function(PSF)of the scattering system,large Field-of-View,extended Depth-of-Field,noninvasiveness and spectral resoluation are now available as successful solutions for high quality and multifunctional image *** this paper,we review the progress of imaging through a scattering medium based on deconvolution method,including the principle,the breakthrough of the limitation of the optical memory ffect,the improvement of the deconvolution algorithm and innovative applications.

关键词： Speckle correlation deconvolution scattering medium imaging through turbid media

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Recent advances in molecular and nanoparticle probes for fluorescent bioanalysis

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Nano Research 2024年第7期17卷 6443-6474页

作者： haowen Luo Lejie Tian Yaoming Zhang Yang Wu Bin Li Jianxi liu State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering Shandong Laboratory of Advanced Materials and Green ManufacturingYantai 264006China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

With the increasing emphasis on ecological safety and physical health,the detection and treatment of harmful substances and diseases are becoming more and more ***,efficiently monitoring these biological behaviors with high accuracy and sensitivity in real-time has shown prominent research *** use of fluorescent probes to analyze organisms has gained momentum in recent years,especially in the field of organ imaging and assisted cancer therapy,where fluorescent bioanalysis demonstrates significant *** this review,we explored the latest advancements in fluorescent molecular probes(e.g.,small-molecule,macro-molecule,supramolecule)and fluorescent nanoparticle probes(e.g.,quantum dots or nanoclusters,metal-organic frameworks,polymers,complexes)used as bioanalytical tools in various assays over the last three *** also delved into their detective mechanisms,specific application areas,and characterization tools for responsive *** review aims to showcase the most recent and comprehensive research progress in fluorescent bioanalysis based on molecular and nanoparticle probes,offering guidance for future developments in the design and fabrication of fluorescent probes and their potential applications.

关键词： fluorescent biosensing bioimaging disease diagnosis tumor detection and treatment

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A Dynamic Plunger Lift Model for Shale Gas Wells

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Fluid Dynamics & Materials Processing 2023年第7期19卷 1735-1751页

作者： Shiyu Miao Xiao liu Xiaoya Feng haowen Shi Wei Luo Peng liu Petroleum Engineering Institute of Yangtze University Wuhan430100China Laboratory of Multiphase Pipe Flow Gas Lift Innovation CenterChina National Petroleum Corp.Yangtze UniversityWuhan430100China Key Laboratory of Drilling and Production Engineering for Oil and Gas Wuhan430100China Sichuan Shale Gas Exploration and Development Limited Liability Company Chengdu640000China Sichuan Changning Gas Development Company PetroChina Southwest Oil&Gas Field CompanyChengdu610051China Oil and Gas Technology Research Institute of Changqing Oilfield Company PetroChinaXi’an710018China

At present,the optimization of the plunger mechanism is shale gas wells is mostly based on empirical methods,which lack a relevant rationale and often are not able to deal with the quick variations experienced by the production parameters of shale gas wells in comparison to conventional gas *** order to mitigate this issue,in the present work,a model is proposed to loosely couple the dynamics of gas inflow into shale gas wells with the dynamics of the liquid *** from the flow law that accounts for the four stages of movement of the plunger,a dynamic model of the plunger lift based on the real wellbore trajectory is *** model is then tested against 5 example wells,and it is shown that the accuracy level is higher than 90%.The well‘switch’,optimized on the basis of simulations based on such a model,is tested through on-site *** is shown that,compared with the original switch configuration,the average production of the sample well can be increased by about 15%.

关键词： Shale gas well complex and more complex well bore structure plunger lift loose coupling simulation model

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Shape anisotropic Fe3O4 nanotubes for efficient microwave absorption

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Nano Research 2020年第3期13卷 621-629页

作者： Jialiang Pan Honggui Guo Min Wang Hui Yang haowen Hu Peng liu Hongwei Zhu State Key Lab of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084China The First Scientific Research Institute of Wuxi Wuxi214035China

Although Fe3O4 particles have exhibited excellent microwave absorbing capacity and widely used in practical application due to the synergistic effect of magnetic loss and dielectric loss,their applications are still limited for the required high mass fraction in *** overcome this problem,the development of Fe3O4 materials with low dimensional structures is *** this study,the shape anisotropic Fe3O4 nanotubes(NTs)with low mass ratios were applied to realize efficient microwave *** NTs with different aspect ratios were prepared through facile electrospinning followed by two-step thermal treatments and mechanical *** cross-linked nanotubular structure enabled the absorbers to have much higher electrical conductivity,multiple scattering,polarization relaxation and better anti-reflection surface,while the shape anisotropic NTs maintained significant multiple resonances with stronger *** all were beneficial to microwave absorption with enhanced dielectric loss,magnetic loss and sterling impedance *** showed that the absorber with 33.3 wt.%of short Fe3O4 NTs had minimum reflection loss of-58.36 dB at 17.32 GHz with a thickness of 1.27 mm,and had the maximum effective absorbing bandwidth(EAB)of 5.27 GHz when the thickness was 1.53 *** absorber with 14.3 wt.%of long Fe3O4 NTs presented the widest EAB in certain radar band with attenuated 80.75%X band and 85%Ku band energy bellow-10 dB at the thickness of 2.65 and 1.53 mm,*** study provided an approach for the development of shape anisotropic magnetic absorbing materials,and broadened their practical applications as magnetic absorbers.

关键词： Fe3O4 nanotubes shape anisotropy multiple resonances microwave absorption

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The establishment of the normal contact force model for a one‐dimensional sphere chain subjected to impact load

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International Journal of Mechanical System Dynamics 2022年第1期2卷 131-142页

作者： Jun liu Futian Zhao Zhimin Xiao Yue Wang Zheng liu haowen Zheng Institute of Engineering Safety and Disaster Prevention Hohai UniversityNanjingChina College of Civil and Transportation Engineering Hohai UniversityNanjingChina

The normal contact force determines the behavior of a particle *** investigate the normal contact force in a one‐dimensional sphere chain subjected to impact load,by comparing the simulation results of the existing typical normal contact force models embedded in the discrete element program,an improved normal contact force model was proposed in this *** improved model con-sists of two parts:the Cundall model for loading and the Daniel model for ***,a systematic test was designed to verify the accuracy and applicability of the improved *** results showed that the calculated contact force curves agree well with the experimental ***,the improved model is implemented in the solution algorithm without need for complex numerical methods and parameters fitting,leading to more efficient simulations.

关键词： discrete element method experiment and simulation normal contact force one‐dimensional sphere chain

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Genetic parameters estimation for growth traits in cultured tiger pufferfish(fugu),Takifugu rubripes

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Acta Oceanologica Sinica 2022年第12期41卷 73-79页

作者： Xin’an Wang Aijun Ma Zhifeng liu Zhibin Sun Liguang Zhu haowen Chang Yellow Sea Fisheries Research Institute Chinese Academy of Fishery SciencesQingdao 266071China Key Laboratory of Sustainable Development of Marine Fisheries Ministry of Agriculture and Rural AffairsQingdao 266071China Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology Qingdao 266071China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266071China

The aim of this study was to evaluate the genetic parameters of the growth performance of Takifugu *** and genetic correlations were estimated for body weight(BW),body length(BL),total length(TL),chest measurement(CM)and trunk length(TKL)of *** from measurements of progeny at 6 months and 12 *** results showed that the heritability was 0.37 for BW6,0.19 for BL6,0.35 for TL6,0.29 for CM6,0.26 for TKL6,0.36 for BW12,0.26 for BL12,0.25 for TL12,0.31 for CM12 and 0.15 for *** range of genetic correlations estimated at 6 months was 0.025–0.725 and−0.002–0.706 at 12 *** results indicated that genetic improvement for faster growth rate or increased body weight in cultured *** was *** on selection theory,the selection strategy for traits with medium heritability is *** that these growth traits do not reach the high level of heritability,family selection should be *** positive genetic correlations among BW,BL,TL,CM,and TKL at 6 months,the five traits could be improved simultaneously through selective *** there was high genetic correlation only between BW12,BL12 and TL12,and negative correlations between TKL12 and BL12 as well as between CM12 and TL12,and only BW,BL and TL at 12 months could be improved simultaneously.

关键词： family genetic evaluation heritability genetic correlation

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柔性材料对爆炸载荷的缓冲效应研究

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中国工程科学 2007年第4期9卷 75-78页

作者：于少娟李永池刘颢文孙宇新胡秀章中国科学技术大学力学系合肥230027 南京理工大学瞬态物理国家重点实验室南京210094

建立了柔性材料/钢复合壳体在爆炸载荷作用下应力波传播问题的完备方程组;使用有限元方法完成了对复合壳体在爆炸载荷作用下应力波传播规律的系列数值模拟,并着重讨论了不同炸药层和柔性材料层厚度对柔性材料与钢交界面载荷的影响。

关键词：柔性材料爆炸载荷载荷改造数值模拟

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Binary molten salt in situ synthesis of sandwich-structure hybrids of hollowβ-Mo2C nanotubes and N-doped carbon nanosheets for hydrogen evolution reaction

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Carbon Energy 2023年第12期5卷 111-124页

作者： Tianyu Gong Yang liu Kai Cui Jiali Xu Linrui Hou haowen Xu Ruochen liu Jianlin Deng Changzhou Yuan School of Materials Science&Engineering University of JinanJinanPeople's Republic of China School of Chemical Engineering Shandong Institute of Petroleum and Chemical TechnologyDongyingPeople's Republic of China

Focused exploration of earth-abundant and cost-efficient non-noble metal electrocatalysts with superior hydrogen evolution reaction(HER)performance is very important for large-scale and efficient electrolysis of ***,a sandwich composite structure(designed as MS-Mo2C@NCNS)ofβ-Mo2C hollow nanotubes(HNT)and N-doped carbon nanosheets(NCNS)is designed and prepared using a binary NaCl–KCl molten salt(MS)strategy for *** temperature-dominant Kirkendall formation mechanism is tentatively proposed for such a three-dimensional hierarchical *** to its attractive structure and componential synergism,MS-Mo2C@NCNS exposes more effective active sites,confers robust structural stability,and shows significant electrocatalytic activity/stability in HER,with a current density of 10 mA cm-2 and an overpotential of only 98 mV in 1 M *** functional theory calculations point to the synergistic effect of Mo2C HNT and NCNS,leading to enhanced electronic transport and suitable adsorption free energies of H*(ΔGH*)on the surface of electroactive *** significantly,the MS-assisted synthetic methodology here provides an enormous perspective for the commercial development of highly active non-noble metal electrocatalysts toward efficient hydrogen evolution.

关键词： binary molten-salt synthesis hydrogen evolution reaction Mo2C hollow nanotubes N-doped carbon nanosheets sandwich structure

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